Renesas R5F104GJDFB#V0

Overview

R5F104GJDFB#V0 from Renesas is a 48-pin LFQFP, 128 KB flash, 8 KB data flash, 16 KB RAM RL78/G14 16-bit microcontroller operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), used in industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F104GJDFB#V0 datasheet, R5F104GJDFB#V0 pinout, R5F104GJDFB#V0 application, or R5F104GJDFB#V0 equivalent, key selection criteria include its industrial-grade temperature range (−40 to +105°C), integrated RTC with calendar/alarm, 10-bit 20-channel ADC, dual UART/LIN support, and hardware DTC/ELC for deterministic peripheral event handling without CPU intervention.

Technical Context

The R5F104GJDFB#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs min @ 32 MHz to 30.5 µs @ 32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator (1–64 MHz selectable) and supports SNOOZE mode for low-latency peripheral-triggered wake-up.

Its peripheral set includes Timer Array Unit (TAU) with 8 channels, one 12-bit interval timer, one real-time clock with 99-year calendar, one watchdog timer, and serial interfaces: up to 8 CSI, 4 UART/LIN, and 10 I²C channels - all managed via Event Link Controller (ELC) for direct hardware-to-peripheral signal routing.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP, 7 × 7 mm, 0.5 mm pitch, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F104GHDFB#V0, this part trades flash/RAM headroom for cost-sensitive volume production; compared with R5F104GJGFB#V0, it targets standard industrial environments where +85°C maximum ambient suffices - simplifying thermal design and qualification.

Availability

R5F104GJDFB#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance UIs, and PLC I/O modules requiring stable component supply across multi-year production cycles.

Supply support for R5F104GJDFB#V0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer equipment requiring robust peripheral integration, long battery life, and extended temperature operation.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104GJDFB#V0?

The R5F104GJDFB#V0 operates at up to 32 MHz with an RL78 CPU core delivering 44 DMIPS. Its high-accuracy on-chip oscillator maintains ±1.0% tolerance across −40 to +85°C and 1.8–5.5 V supply, eliminating need for external crystals in many timing-critical applications. This frequency enables real-time execution of motor control algorithms and protocol stacks without external clock sources.

Does the R5F104GJDFB#V0 support background data flash rewriting while executing code from program flash?

Yes, the R5F104GJDFB#V0 supports Background Operation (BGO) for data flash. During BGO, the CPU can execute instructions from code flash memory while simultaneously erasing or writing to the 8 KB data flash - critical for logging sensor data or updating calibration parameters without interrupting real-time control tasks.

What are the key low-power modes supported by the R5F104GJDFB#V0 and their typical current draw?

The R5F104GJDFB#V0 supports HALT, STOP, and SNOOZE modes. In STOP mode with RTC and LVD active, it draws just 0.60 μA; active-mode consumption is 66 μA/MHz. SNOOZE mode allows selected peripherals (e.g., UART, ADC) to operate autonomously while CPU sleeps - reducing average power in event-driven applications like sensor polling.

How many serial communication interfaces does the R5F104GJDFB#V0 integrate, and what protocols are supported?

The R5F104GJDFB#V0 integrates up to 4 UART/LIN channels (LIN 2.2 compliant), 8 CSI channels (SPI-compatible), and 10 I²C channels (standard/fast-mode). All are configurable via the Event Link Controller (ELC) for hardware-triggered transfers, enabling deterministic communication without CPU overhead in time-sensitive industrial networks.

Is the R5F104GJDFB#V0 pin-compatible with other RL78/G14 variants in the same 48-pin LFQFP package?

Yes, all RL78/G14 devices in the 48-pin LFQFP package (e.g., R5F104GKAFB#V0, R5F104GLAFB#V0, R5F104GJDFB#V0) share identical pinouts and electrical characteristics. Memory and peripheral configurations differ by part number, but PCB layout and footprint remain interchangeable - enabling scalable design across performance tiers without board re-spin.